EVENT
BOARDSIZE 19
BLACK Jon Diamond, 5d
WHITE Matthew Macfadyen, 4d
PLACE London Open 1977/78
RESULT b+11
RULES Japanese
SOURCE BGJ 40, February 1978, Page 12
COM
Copyright British Go Association 1978, 2004
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B 1 e3
W 2 d14
COM
White 2,4,6 are a fuseki I have not tried before. The idea is to
concentrate early on the center, in order to attack.
ENDCOM
B 3 q16
W 4 q5
B 5 c4
W 6 k10
MARK #2 #4
COM
White 2,4,6 are a fuseki I have not tried before. The idea is to
concentrate early on the center, in order to attack.
ENDCOM
B 7 k16
COM
(Black 7 would well be played top-left but Diamond dislikes all
joseki.)
ENDCOM
W 8 r14
B 9 r11
W 10 o16
B 11 q14
W 12 q13
B 13 r15
MARK A@p14 #6
COM
Black 13, 17 are very conservative, leaving him with a lot of
ground to make up centrally. (Black 13' could well be at White
14 (A), countering the influence of White 6.)
ENDCOM
W 14 p14
B 15 q15
W 16 p13
B 17 p17
W 18 s13
B 19 r7
W 20 o17
B 21 s14
W 22 r13
B 23 g16
W 24 r17
MARK A@s16
COM
White 24 was not intended to kill the corner, merely to strengthen
White outside while Black ends up defending with Black 29 (A).
ENDCOM
B 25 o18
W 26 n18
B 27 p18
W 28 m17
B 29 s16
W 30 e17
MARK #7 #23
COM
(White 30 loosely surrounds a large corner while aiming under the
Black 7, 23 group.)
ENDCOM
B 31 e16
COM
Black 31 - White 56 was a very succesful sequence for me (White).
ENDCOM
W 32 d16
B 33 d17
MARK #31-33
COM
(31-32-33 cross-cutting is typical Diamond play to settle his stones
one way or another.)
ENDCOM
W 34 f17
COM
(White 34 is a natural move, strengthening White's weakest stone.)
ENDCOM
B 35 f16
W 36 g17
B 37 h17
W 38 d18
B 39 c17
W 40 c16
B 41 c18
W 42 e18
B 43 b16
W 44 b15
B 45 b17
W 46 h18
B 47 j18
W 48 j17
B 49 h16
W 50 k18
B 51 f13
W 52 c14
B 53 d12
W 54 b12
B 55 b11
W 56 b13
MARK #31-56
COM
Black 31 - White 56 was a very succesful sequence for me. Note it
is probably bad for Black to live in the corner by cutting with 51'
below 40, since his centre stones will probably die and he would
have no prospects on the left side. (White's group with White 56 is
not yet alive, but he can do without 2 eyes - the corner dies
first.)
ENDCOM
B 57 c11
W 58 k4
MARK A@r5 #9 #19
COM
White 58' could have been played around Black 59 (A), in order to
attack Black 9, 19 but I was afraid that a Black play at 58 would
make his lower left territory too large.
ENDCOM
B 59 r5
COM
59-75 stretches Black's position to the limit, maybe further,
but it is not clear how I should attack.
ENDCOM
W 60 r4
B 61 q4
W 62 r3
B 63 q3
W 64 q2
B 65 p5
W 66 q6
B 67 s5
W 68 p2
B 69 p4
W 70 q7
B 71 q8
W 72 o6
B 73 n4
W 74 r8
B 75 s7
MARK A@r9 B@r2 C@s3 D@s4
COM
59-75 stretches Black's position to the limit, maybe further,
but it is not clear how I should attack. Extending at 119 (A) with
76' was possible, intending either to kill the lower group or the right
hand side, but I rejected this because I was not sure it would work
and I hoped anyway to kill the lower group without disturbing the aji
(possibilities) on the right side. (79 (B) leaves White alive in the
corner with one more move, which he was anyway, while forcing the
useful moves 81 (C), 83 (D).)
ENDCOM
W 76 m5
B 77 n5
W 78 n6
B 79 r2
W 80 s2
B 81 s3
W 82 r1
PRISONER r2
B 83 s4
W 84 r2
B 85 n2
W 86 o2
MARK A@m4
COM
White 86' at 87 (A) would be too reckless - the ensuing
semeai would probably end in ko and Black has several huge ko
threats in the upper left corner.
ENDCOM
B 87 m4
W 88 m2
B 89 l5
W 90 m6
B 91 l4
W 92 k3
B 93 n1
W 94 l2
B 95 l6
COM
(Is Black 95 the correct direction of play, rather than, say, to
the left of 89 or 95 ?)
ENDCOM
W 96 o8
B 97 q9
W 98 j6
COM
Whether or not Black lives, his prospects on the left side are
severely limited by White 98 - 100.
ENDCOM
B 99 l8
W 100 k7
MARK #98
COM
Whether or not Black lives, his prospects on the left side are
severely limited by White 98 - 100.
ENDCOM
B 101 l7
W 102 m9
B 103 o3
W 104 t3
B 105 l9
W 106 l10
B 107 n8
W 108 o9
B 109 n9
W 110 n10
B 111 m8
W 112 p8
MARK A@o7 B@q10 C@r9
COM
White 112 makes bad shape. The sound way to stop Black 130 (A)
is for White to play there himself. I wanted to be able to play 118
in sente, but did not see that 112 could be played at 118 (B) at once.
If Black 119 (C) then White 130 leaves Black in desperate trouble.
ENDCOM
B 113 m10
PRISONER m9
W 114 n11
B 115 m11
W 116 l12
B 117 m12
W 118 q10
B 119 r9
W 120 l13
B 121 m13
W 122 l14
B 123 o10
W 124 r10
B 125 p10
W 126 p9
B 127 s9
W 128 p11
B 129 p7
W 130 o7
B 131 p6
W 132 b4
COM
White 132 - 168: Without examing the sequence in detail, and the problems of life and death involved, it is obvious that 132-168 is very bad for White. It should have been possible to produce an attack on Black's upper left group and reduce Black's moyo at the same time, leaving Black with far less than the twenty points he obtained lower left. Now a small blunder will suffice to lose.
ENDCOM
B 133 c3
W 134 c6
B 135 e6
W 136 d8
B 137 j5
W 138 k5
B 139 h5
W 140 g3
B 141 k6
W 142 g5
B 143 h6
W 144 f2
B 145 f8
W 146 c5
B 147 b3
W 148 e5
B 149 f4
W 150 d4
B 151 e2
W 152 f7
B 153 g4
W 154 h2
B 155 f6
W 156 b9
B 157 b7
W 158 b8
B 159 c7
W 160 d7
B 161 a4
W 162 b5
B 163 d6
W 164 a6
B 165 d5
W 166 a7
B 167 e9
COM
Black 167 forces White to live on a small scale.
ENDCOM
W 168 a10
MARK #132-168
COM
White 132 - 168: Without examing the sequence in detail, and the problems of life and death involved, it is obvious that 132-168 is very bad for White. It should have been possible to produce an attack on Black's upper left group and reduce Black's moyo at the same time, leaving Black with far less than the twenty points he obtained lower left. Now a small blunder will suffice to lose.
ENDCOM
B 169 j12
COM
Black 169 prepares to make a few points in the centre.
ENDCOM
W 170 k12
B 171 s10
COM
Black 171 and White 172 are both mistakes.
ENDCOM
W 172 q11
MARK A@o11 B@m15
COM
Black 171 and White 172 are both mistakes. If I had answered with
172' at 198 (A), then Black 191 (B) would not work and Black's last
chances of winning disappears.
ENDCOM
B 173 j11
W 174 j10
B 175 j14
W 176 s17
B 177 s19
W 178 t14
B 179 s15
W 180 g10
B 181 e14
W 182 a11
B 183 f3
W 184 f1
B 185 h1
W 186 j2
B 187 e1
W 188 j1
B 189 h3
W 190 g2
B 191 m15
COM
After 191-199 White's position is hopeless.
ENDCOM
W 192 m14
B 193 n14
W 194 n15
B 195 l15
W 196 n13
B 197 n12
W 198 o11
PRISONER o10 p10
B 199 o13
PRISONER n13
MARK #191-199
COM
After 191-199 White's position is hopeless.
Black eventually won by 11 points.
ENDCOM